Device for constricting the thread balloon in ring spinning and ring doubling frames



1,959 2E. REISSMULLER 2,867,075

DEVICE .FOR CONSTRICTING THE THREAD BALLOON V IN RING SPINNING AND RING nousuuc FRAMES Filed March 19, 1956 3 Sheets-Sheet 1 Inventor:

Jan. 6," 1959 E. REISSMULLER DEVICE FOR C THREAD BALLOON IN RING SPI OUBLING FRAMES ONSTBICTING NNING AND RING n a Sheets-Skeet; 2

Filed March l9, 1956 Jan. 6, 1959 Q REISSMULLER v E. 2,867,075 DEVICE FOR CONSTRICTING THE THREAD BALLOON f IN RING SPINNING AND RING DOUBLING FRAMES Filed March 19, 1956 v 3 Sheets-Sheet} Fly. 12

United States Patent DEVICE FOR CONSTRICTING THE THREAD BAL- LOON IN RING SPINNING AND RING DOU- BLING FRAMES Ernst Reissmuller, Hof (Saale),

Germany, assignor to Hermann Ebenauer & C0.,

The invention relates to a device for constricting the thread balloon, and which consists of a thread balloon constricting hoop carried by support legs, wherein the support legs are fixed to a fiat substantially circular ring which is secured on the ring rail and is held by the spinning or doubling ring, and the said support legs may serve if so required as fly cleaners for the travellers, being suitably constructed and arranged for this purpose.

Thread balloon constricting hoops are known in many type of construction and arrangement. If a plurality of restricting hoops made of steel wire are used spaced at a certain distance from one another, the lower hoop is generally moved synchronously with the ring rail and the upper hoop is moved in similar manner to the thread guide eyelet. The constricting hoops are then fixed to horizontal rails or to vertical bars, and supports which are articulated in hinged fashion. This plurality of parts arranged on or behind the ring rail have a disturbing effect during operation and also tend to collect dirt and fly, and thus they are a source of constant trouble.

It has also already been proposed to fix at least one constricting hoop to a support which is mounted near each or between two rings on the ring rail. This arrangement of supports has not been accepted at all in practice since each part fixed to the ring rail makes it diflicult to keep clean and hinders the work of the operator in general.

In the case of all hitherto known arrangements, it is necessary at the time of assembly and continuously during operation, to centre the hoops i. e. to arrange them so as to be exactly co-axial with the spinning spindle. In practice, the spindle will always be aligned in accordance with the ring; then the thread guide eyelet and the constricting hoops are adjusted with the help of special tools, which is quite a diflicult operation.

The object of the present invention is to free the ring rail of all parts which are provided for fixing the constricting hoops and tend to collect dust and fly, and to make the time-wasting centering of constricting hoops unnecessary.

With this object in view, the thread balloon constricting hoop is carried by one or more support legs which are fixed to a flat, substantially circular disc. The internal diameter of this disc corresponds to the ring rail bore for receiving the rings; it bears on the ring rail under the ring and is held fast thereby without further means being necessary.

In this way the device with the constricting hoop is constrainedly centred by the spinning or doubling ring, and no devices and auxiliary tools are required for accurate setting of the constricting hoops.

But also, in order to render unnecessary the provision of fly removers for the traveller e. g. on cotton and artificial staple fibre ring spinning frames, and to make it possible to dispense with such fly removers, the support legs which carry the constricting hoop are constructed themselves as fly removers.

According to the invention preferably two support legs are provided: alternatively it is possible to provide only one support leg or more than two. If two support legs are used it is advantageous to fix them to the flat disc offset by approximately relatively to one another.

The fastening means for securing the constricting hoop to the support legs may be fixed or releasable or may-be vertically adjustable. This can be achieved by means of fixing bolts which are screwed in through slots or holes in the support legs and into the hoops, or by means of straps or claws or the like which serve for guiding the support legs, and clamping screws for fixing the hoop in the desired position.

In order to reduce the friction of the thread against the inner surface of the constricting hoop the said surface is preferably of curved construction so that, in the case of a hoop which is outwardly curved, the thread bears against only the top and bottom inner edges of. the hoop or, if the hoop is inwardly curved, the thread bears against a short section in the middle of the curved portion.

In order to make it possible to insert the thread quickly and easily into the inside of the constricting hoop and to prevent it from escaping accidentally from the said hoop, the latter is formed with a preferably oblique slot which is advantageously widened considerably at one end and whose inner edge which the thread passes by last during its travel, is sharply rounded-oft or bevelled. Alternatively, it is possible to bend this edge slightly outwards, which has the same advantageous result. The inclination of the slot relatively to the vertical depends on the position of the thread and the type of twist. The slot must form at least an acute angle with the thread.

The circular discs, which bear against the ring rail and carry the support legs of the constricting hoop, are expediently secured against undesirable rotation. There are various possible ways of doing this, for example the outer periphery of the disc can be made to deviate from a perfectly circular form in such manner that the discs arranged adjacent one another on the ring rail prevent each other from rotating. Another method is to fix the discs by screws or in similar fashion to the ring rail.

Fly removers for the traveller are known and are generally screwed to the ring rail at such a distance beside the sprinning ring that their sharp edge directed in the opposite sense to the movement of the traveller strips otf any fly which may adhere to the said traveller without impairing the travel thereof. In order that the support legs can fulfil their particular task of acting as fly removers for the traveller, they are sharpened at their edge, at least at the level of the traveller, and more particularly at the edge facing towards the ring and opposed to the direction of travel of the traveller, and they are set in accordance with the usual position of fly removing devices.

A few specially preferred constructional examples of the subject of the invention which will now be described in more detail, are illustrated in Figs. 1 to 14.

Fig. 1 is a perspective view of the device,

Fig- 2 shows the device fixed to the ring rail by the ring,

Figs. .3 :to fizshow ditterent methods of fixing the constricting hoop. to .thesupportle gs,

Figs. 7a and 7b show two diiferent profiles for the restricting hoop,

Figs. 8 to 11 show different constructional examples for the slot through which the thread can be introduced into the constricting hoop, and

Figs. 12 to 14 show devices which prevent the rotation of the discs on the ring rail.

As may be seen from Fig. 1, the device consists of the fiat substantially annularsdisc 1 to whichtthe support legs 2 arefittedapreferably.by welding The support legs 2 carry the thread balloon :constrictinghoop '3 which-can be connected to the said legs .fixedly 'or-else .releasably by meansofscrews 4. .It is expedientior example, to provide at the upper part of thesupport legs 2 a number of holes-5 so .thatthe positionof the constricting hoop. in the vertical .sense .may be varied or so that the same device can .beusedtordifierent heights of stroke-of the ring rail. ,To allow insertion of the thread, thering-comprises in .the (usual: mannera sloping:slot-6- or, as is shown in.Fig.f.2, .a .vertical slot 16'.

IFig..2shows the arrangement of the deviceon the .ring rail 9; the internal diameter of the disc '1 correspondstto therbore provided in the ring-rail 9.for the rings 7. The disc-flissupported between the ring rail 9 and the collar 8 which isgenerally provided on the ring. Thescrew 9 or a clamping device-is provided as usual for fixing the-ring; this screw or device holds the device accordingtothe inventionatthe same time. Since the constricting hoop 3 is arranged coaxially with the disc 1 during manufacture, there is no need for an-operationtor centering theconstricting hoop as would otherwise be necessary.

In order to fix the position of the circular discs 1 and to prevent rotation thereof on the ring rail 9, the outer periphery-of the disc is made to deviate from the circular in such manner that the adjacently disposed discs prevent eachother.fromrotating.

As .Fig. 12 shows, the discs 1 are provided with two straight, parallel, diametrally oppositely disposed edges 1 at which the-said discs contact one another.

Another example is illustrated in Fig. 13, wherein in stead of-straight edges the discs 1 comprise a recess 1 and a diametrally opposite projection 1 The engagement of the. projection 1 in therecess 1 of the adjacent disc couples together all .the discs of one row.

Both constructional examples have the advantage that a disc can be removed without wasting any time on re leasing fastening means.

Another possible method of preventing the discs from rotating is-as is shown in Fig. 1'4to.fix the discs 1 tothe ring rail 9 by means of screws 29. Instead of screws, other .similar means can'also be used.

In order to clean'the traveller from any spinning fly whi'chmay adhere thereto, the edges 10 of the support legs 2 are'sharpened'and are'arranged in the position of fiy'removers with respect to thetraveller.

According to'Fig. 3 the hoop 3 isfixed' to the support leg I 2 by means-of straps 11 which "carry a clamping screw'12.

In'the'construction according to Fig. '4, the support legs 2 -areguided between'claws 13. Clamping is carried out bymeans of the bolts 15 which are screwed into the tapped hole 14- in the support legs 2 Fig. 5 shows a further method of fixing. The hoop 3 has athickened -portion 16 in the region of the tapped hole 17 for receiving the fastening bolts 18 which extend through the slots 19 in the support legs 2 In Fig.6, the clamping screw 20 is mounted tangentially to the hoop 3 in the strap 21.

Bike constricting hoop 3 is profiled in the manner illustrated in Fig. '7a,the thread 22 bears against only a short section on thecurved inner side-of the constricting hoop 3 If the hoop 3 is curved-in the -outwardidirection as 4 shown in Fig. 7b, the thread 22 in practice bears against ,onlythe .top..edge.23.andthebottom edge 24 of thesaid hoop 3.

As is shown in Figs. 8 and 9, the insertion slot 6 or 6 is widened in the region of the lower edge 25 or 25 of the constricting hoop 3 or 3 so that the thread can be inserted more easily.

As can be seen from Fig. 10, when the thread 22 is travelling in the direction represented by the arrow 26 3 the inner edge 27 of the slot 6 in the hoop 3 is rounded to a considerable extent. Fig. 11 shows another possibility of achieving the sameefiect; according to this figure, the edge 28 of the hoop3 is bent slightly outwards.

The device'saccording to'theinvention makeit' possible to constrict the .threadballoon to such an extent that even with narrow spindle spacing and with relatively high spindle speeds, the balloon has no disturbing efiect. The thread is no-longer.s\ibjected.to .a constant variation in tension, but travels smoothly and quietly. Thread breaks are considerably reducedandwear on the spinning and doubling rings is completely uniform-and is substantially reduced.

A further very;irnportant advantage-consists in that when a device according to the invention is used, considerablyylighter travellers can ,beemployedand the rotational speed 'of-. the spindles can be substantially increased. In the-most disadvantageous-.case,-the capacity of a' machine canbeincreased'by "about 15 to 20%, audio normal cases even more.

Finally, by .reasontof'the simple construction of the device accordinglto the invention, it may be mentioned as a furtheradvantage that the-saiddevice .can' be manufactured very .economically,-andissimple to assembleand demountnoskilled operatorbeing required for this purpose.

Whatlclaim,-and desireito-secure byLetters Patentis:

'1. In atspinning machine provided with ringspinning and doubling frames and a traveller, adevice'forconstricting thethrea'd balloon, comprising in combination, a ring rail, a pluriality of annularopenings in' said ring rail, a plurality of annular discs, eachsecured'to said rail about each said opening thereof and aligned with each said respective-opening, a plurality of spinning rings in said ring rail, each of said spinning rings-respectively securing each of-said discs tosaid rail aboutone'of each'said respective openings, at least one pair of support legs, each of saidspair of legs having :one -ofits ends secured to each of saidcircular discs,--and a threadballoon constricting hoop secured to each of the other ends of each of said pair of support. legs.

2. The device according to claim 1, wherein eachof said constrictinghoops is secured'to-said ends'of said supportlegs coaxially with respect to said circular disc.

3. The'device-according 'to' claim 2, wherein eachof said spinning rings is formed withan annular, outwardly extending-collar portion for clamping each of said annular discs respectively'to said ring rail.

'4. The deviceaccording to'claim 3, wherein said pair of support legs is.formed with sharplybeveled edges .on the sides thereofldirected oppositely to the movement of the traveller, for removing fly.

SJThe-device according to claim 1, wherein .eachof said constricting hoops is curved inwardly about its circumference.

6. The device .according to claim 1, wherein eachof saidconstricting hoops is curved outwardly about its cir- :umference.

7. The device according to claim 1, wherein said annular discs are disposed on.--said rail member adjacent to one another, and means provided in said discsfor preventing the rotation thereof on said rail member.

8. The device according" to claim '7, said meansifor preventing the rotation otsaid discs consisting-of diametrically opposed flat portionsuon the annular circumference 5 of each of said discs, said flat portions abutting against one another.

9. The device according to claim 7, wherein said means consist of projections extending from the outer periphery of each of said rings and diametrically opposed thereto 5 recesses, each said projection being received in each said recess of an adjoining ring disc respectively.

10. The device according to claim 7, wherein said adjacent ring discs are secured to said ring rail by means of screw fasteners.

References Cited in the file of this patent UNITED V STATES PATENTS Jenks Jan. 11, 1887 Hayden May 29, 1906 Vicq May 25, 1937 Roberts Sept. 20, 1955 FOREIGN PATENTS Great Britain of 1898 France Oct. 8, 1952 (2d addition to 955,185) 

